USPTO Patents Application 10693004

esp@cenet — Bibliographic data

Page 1 of 1

A METHOD AND SYSTEM FOR DISTRIBUTED CACHING, PREFETCHING
AND REPLICATION

G06F12/00; G06F13/00; G06F17/30; H04L29/06; H04L29/08;
G06F12/00; G06F13/00; G06F17/30; H04L29/06; H04L29/08;

(IPC1-7): G06F12/00; G06F13/00; G06F15/16; G06F17/30:
H04L12/54; H04L12/58; H04L29/06

- European:

H04L29/0SN27C
Application number: JP19980550458T 19980515

Priority number(s): US19970861934 19970522; WO1998US09943 19980515

Also published as:

1 WO9853410 (A2)
11W09853410 (A3)
1§ ZA9804298 (A)
H US61 67438 (A)
□ NZ501380 (A)

Abstract not available for JP 2001526814 (T)

Abstract of corresponding document: WO 9853410 (A2)

A technique for automatic, transparent, distributed,

scalable and robust caching, prefetching, and

replication in a computer network that request

messages for a particular document follow paths

from the clients to a home server that form a routing

graph. Client request messages are routed up the

graph towards the home server as would normally

occur in the absence of caching. However, cache £

servers are located along the route, and may

intercept requests if they can be serviced. In order to

be able to service requests in this manner without

departing from standard network protocols, the

cache server needs to be able to insert a packet

filter into the router associated with it, and needs

also to proxy for the homer server from the

perspective of the client.: Cache servers may

cooperate to service client requests by caching and

discarding documents based on its local load, the

load on its neighboring caches, attached

communication path load, and on document

popularity. The cache servers can also implement

security schemes and other document

transformation features.

"Si 'A

Data supplied from the esp@cenet database — Worldwide

http ://v3 .espacenet.com/publicationDetails^iblio?KC=T&date=200 1121 8&NR=200 15268... 1/22/2009

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2001-5268

INTERNATIONAL SEARCH REPORT

Intern-- -latAppIksilonNo

PCT/JS 98/"e9943

A^cdr.jjplrrtci.^ci^PeL.rl fcwbatan (IPO] a-ta both national cto«ft»fon tnitlPD

-61-

<Wt< 2 0 0 1 - 5 2 6

INTERNATIONAL SEARCH REPORT

PCT/US 98/09943

C(CQniinuaiion) documents considered tc

iSndkaSon.wntroappwp

A. HEDDAYA 6 5. HI ROAD: "WebUave:
Globally Load Balanced Fully Distributed
Caching of Hot Published Documents"
TECHNICAL REPORT BU-CS-96-024. BOSTON
UNIVERSITY, CS DEPT.
October 1996, XP082075429
printed on August 2lst, 1998 and retrieved
from Internet at:

http://www.cs.bu.edu/techrepprts/abstracts

/96-024

see abstract

-& HEDDAYA A ET AL: "WebWave: globally
load balanced fully distributed caching of
hot published documents"
PROCEEDINGS OF THE 17TH INTERNATIONAL
CONFERENCE ON DISTRIBUTED COMPUTING
SYSTEMS (CAT. NO.97CB36053) , PROCEEDINGS
OF 17TH INTERNATIONAL CONFERENCE ON
DISTRIBUTED COMPUTING SYSTEMS, BALTIMORE,
MO, USA, 27-30 MAY 1997, ISBH
0-8136-7613-5, 1997, LOS ALAMT05, CA,
USA, IEEE COMPUT. SOC. PRESS, USA,
pages 169-168, XP0G2075421

SHR1 KUMAR H ET AL: "Thinternet: life at

the end of a tether"

COHPUTER NETWORKS AND ISDN SYSTEMS,

vol. 27, no. 3, December 1994,

page 375-385 XP004Q37970

see page 379, right-hand column, paragraph

3.2 - page 381. left-hand column,

paragraph 3.3

WO 93 24890 A (PITTS WILLIAM R) 9 December
1993

see page 15, line 1 - page 25, line 12
see page 9, line 9 - page 13, line 9

BGLOT J ET AL: "Performance engineering
of the World Wide Web: Application to
dimensioning and cache design"
COHPUTER NETWORKS AND [SDN SYSTEMS,
vol. 28, no. 11, May 1996,
page 1397-1405 XP004018237
see page 1403, right-hand column, line 1 -
page 1405, right-hand column, paragraph 4

-/"

1-38,
43-62,
68,77

1,2,43,
44,53,6f

-62-

(63) ^20 0 1 -5 2 6 8 1 4

INTERNATIONAL SEARCH REPORT i , Ml Ho '

PCT/US 98/09943

C(Canlimalion) DOCUMENTS CDNSQERED TO BE RELEVANT

A

BRAUN H ET AL; "Web traffic
characterization: an assessment of the
impact of caching documents from NCSA's
web server"

COMPUTER NETWORKS AND ISDN SYSTEMS,

vol. 28, no. L, December 1995,

page 37-51 XPO040012O9

see page 49, right-hand column, paragraph

5.4 - page 50, right-hand column, line 20

1,20,21,
53,63,67-

I [July 1SS2)

-63-

¥fti'2 0 0 1-526814

INTERNATIONAL SEARCH REPORT

PCT/US 9S/09943

Box I Observations where certain claim* w«re tounu unsearchable (Continuation ot Item 1 of fliat sheet)

Ttiia International Search Report haa not bean established in reaped of certain claims under Articfa 17[2)(a) (or the following re
' ' ^ becausB^ey relate to subject matter not required to beaearohed by this Authorily, namely:

2. \_\ Claims Nca.:

because they relate to parts of trie International Application that do nrji comply wit
an extent that no meaningly International Search can be carried out,specifcally:

. PI Claims Noa.:

because the/ are dependent claims and are not drafted in ascendance with the second and third sentence* of Rule 6.4(a).

Box II Observations where unity ot invention l« laeMno; (Continuation of item 2 of firm sheer)

Thle International Searching Authority found multiple inventions in this international application, as follows:

Claims 1-38, 41-77: Method for distributed caching, prefetching and replication
Claim 39: Method for providing a secure comniuni cation path in a network, of
computers .

Claim 40: Method for reducing bandwidth communication path 1n a network of
computers .

1 . I I Ad all required additional aoaroh feeo were iinwly paid by the ipoliort, thi« lr.tomatio/r»l S»ar<=>i Roport co«>re all
' — I searchable claims.

2, Q As all searchable daime could be searched without alforl justifying an addrlirjnal fee, thia Authority did riot irrrita oayrnont

□ Aa only oomo ot tha required additional searon fees were limaiy paid by the applicant, mea Irtem atonal Ssarch Report
aevsns only thoss claims for whioh fees were paid, opwfioalty claima Nob, :

I, fiTi Mo required additional search lees were UmeSy paid by lha appfcant Conaeouently, this Int
restnered to the invention first mentor J : " ' ' ~ ~ ^ '

1-38, 41-77

| | Tha addition.! search teas were accDmpsn i»d by the appficant'a prates!.
□ Nap,,

Form PCT/l3WZ10(commuation of first sf

-64-

(65)

th-Ji 2001-5268. 1

INTERNATIONAL SEARCH REPORT

PCT/US 98/09943

2136727 A G9-12-1993

2227792 A 30-12-1993

0643853 A 22-03-1995

8500918 T 30-01-1996

5511049 A 11-03-1997

(66)

ftj.< 2001-526814

(51) Int. CI. 7 KMC* ■ FI f-73-K(##)

H 0 4 L 12/58 H 0 4 L 1 1/20 1 0 1 Z

29/06

(Smt&lil E P (A T, BE, CH, CY,

DE, DK, ES, FI, FR, GB, GR, IE, I
T, LU, MC, NL, PT, SE), O A { B F , BJ
, CF, CG, CI, CM, GA, GN, ML, MR,
NE, SN, TD, TG), A P (GH, GM, KE, L
S, MW, SD, SZ, UG, ZW), E A (AM, AZ
, BY, KG, KZ, MD, RU, TJ, TM), AL
, AM, AT, AU, AZ, BA, BB, R G, BR,
BY, CA, CH, CN, CU, CZ, DE, DK, E
E, ES, FI, GB, G E, GH, GM, GW, HU
, ID, T L, T S, J P, KE, KG, KP, KR,
KZ, LC, LK, LR, LS, LT, LU, LV, M
D, MG, MK, MN, MW, MX, NO, NZ, PL
, P T, R O , R U , S D, S E , S G , SI, S K ,
SL, TJ, TM, TR, TT, UA, UG, UZ, V
N, YU, ZW

(72) mm ^ y • T 7A^-

02154 S^A-lfA, Xf-yX fcA-
o-K 901

(72)!PJ1# 4 3,-7-?, ■ T-'-f fcTy K • v^-

02062 /-t?y K, fc^j/v 5 u~ F
2809